Hey 5HT-2A,
I'm not used to think in ounces but if I'm not mistaken that's over 3 grams of herb. This will require you to smoke more plant matter in a toke in order to get the spice you need, and if you're aiming to hyperspace, less may be more effective. Particularly if you are infusing harmalas as well.
It's a matter of taste really, but lots of people like 1 g herb + 1 g spice, and then harmalas depending on your gusto. A ratio of 1/1/0,4 for me is a sweet spot, but do experiment and find yours.
And if you like the colour weed brings to your experience and 25 mg of weed sounds not enough (thinking about the most common dose of spice for full effects here), you can always smoke a little before and then hit the infused bud.
"The Menu is Not The Meal." - Alan Watts